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Related Experiment Videos

Magnetic resonance imaging in syringomyelia.

J E Gillespie1, J P Jenkins, R A Metcalfe

  • 1Department of Diagnostic Radiology, University of Manchester, England.

Acta Radiologica. Supplementum
|January 1, 1986
PubMed
Summary

Magnetic resonance imaging (MRI) reliably detects syrinx cavities, even in normal-sized cords. This study found MRI identified more cases of syringomyelia without tonsillar ectopia than expected.

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Area of Science:

  • Neurosurgery
  • Radiology
  • Neurology

Background:

  • Syringomyelia, characterized by syrinx cavities, often presents with neurologic deficits.
  • Chiari malformation is a common association with syringomyelia.
  • Accurate detection of syrinx cavities is crucial for diagnosis and management.

Purpose of the Study:

  • To evaluate the reliability of magnetic resonance imaging (MRI) in detecting syrinx cavities.
  • To determine the frequency of syrinx cavities associated with Chiari malformation.
  • To compare MRI findings with CT myelography (CTM).

Main Methods:

  • MRI was performed on over 120 patients with cranio-cervical junction neurologic deficits.
  • CT myelography (CTM) was used to evaluate 41 of these patients.
  • Syringomyelia and associated conditions like tonsillar ectopia were assessed.

Main Results:

  • MRI detected 27 syrinx cavities.
  • CTM identified 14 cases of intramedullary cavitation; MRI confirmed 11 of these.
  • Of the 19 syrinx cavities not associated with known causes, 10 (53%) had tonsillar ectopia.

Conclusions:

  • A discrepancy exists between MRI and CTM for small cavities in normal-sized cords.
  • MRI identifies syringomyelia without tonsillar ectopia more often than anticipated.
  • MRI is a valuable tool for diagnosing syrinx cavities and associated conditions.

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